CVE-2017-0883: Nextcloud Server before 9.0.55 and 10.0.2 suffers from a permission increase on re-sharing via OCS API issue. A permission related issue within the OCS sharing…

PriorityP434medium6.4CVSS 3.0

AVNACLPRLUINSCCLILAN

EPSS

0.59%

43.9th percentile

Nextcloud Server before 9.0.55 and 10.0.2 suffers from a permission increase on re-sharing via OCS API issue. A permission related issue within the OCS sharing API allowed an authenticated adversary to reshare shared files with an increasing permission set. This may allow an attacker to edit files in a share despite having only a 'read' permission set. Note that this only affects folders and files that the adversary has at least read-only permissions for.

Affected

3 ranges

Vendor	Product	Version range	Fixed in
nextcloud	nextcloud_server	<= 9.0.54	—
nextcloud	nextcloud_server	—	—
nextcloud	nextcloud_server	—	—

CVSS provenance

nvdv3.06.4MEDIUMCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

nvdv2.05.5MEDIUMAV:N/AC:L/Au:S/C:P/I:P/A:N

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